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    Question

    If the average age of a staff in a company is 60

    (including the age of the HR); that of the males is 8 and if the age of the HR is 10 more than the average age of the females, then what is the average age of the females? (the number of males and females is the same) TYPE M
    A 20 years Correct Answer Incorrect Answer
    B 32 years Correct Answer Incorrect Answer
    C 30 years Correct Answer Incorrect Answer
    D Cannot be determined Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Let the number of males = number of females = n Hence, total age of males = 8n Let the average age of females = x Hence, total age of females = nx Total age of the staff = 8n + nx + x + 10 Since this is a single linear equation in two variables, a unique solution can’t be found. Therefore, the average age of females cannot be determined.

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